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Author :
Publisher : DIANE Publishing
ISBN 13 : 1428996788
Total Pages : 29 pages
Book Rating : 4.4/5 (289 download)
Download or read book Modeling of longitudinal unsteady aerodynamics of a wingtail combination written by and published by DIANE Publishing. This book was released on with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781720629061
Total Pages : 32 pages
Book Rating : 4.6/5 (29 download)
Download or read book Modeling of Longitudinal Unsteady Aerodynamics of a Wing-Tail Combination written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-03 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamic equations for the longitudinal motion of an aircraft with a horizontal tail were developed. In this development emphasis was given on obtaining model structure suitable for model identification from experimental data. The resulting aerodynamic models included unsteady effects in the form of linear indicial functions. These functions represented responses in the lift on the wing and tail alone, and interference between those two lifting surfaces. The effect of the wing on the tail was formulated for two different expressions concerning the downwash angle at the tail. The first expression used the Cowley-Glauert approximation known-as "lag-in-downwash," the second took into account growth of the wing circulation and delay in the development of the lift on the tail. Both approaches were demonstrated in two examples using the geometry of a fighter aircraft and a large transport. It was shown that the differences in the two downwash formulations would increase for an aircraft with long tail arm performing low-speed, rapid maneuvers.Klein, VladislavLangley Research CenterUNSTEADY AERODYNAMICS; AERODYNAMIC CHARACTERISTICS; AERODYNAMIC STABILITY; LONGITUDINAL STABILITY; LIFT; PITCHING MOMENTS; WIND TUNNEL TESTS; BODY-WING AND TAIL CONFIGURATIONS; WINGS; TAIL ASSEMBLIES; DOWNWASH; FIGHTER AIRCRAFT
Author : Vladislav Klein
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (317 download)
Download or read book Modeling of Longitudinal Unsteady Aerodynamics of a Wing-Tail Combination written by Vladislav Klein and published by . This book was released on 1999 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerodynamic Loading on Manoeuvring Aircraft written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jack Morito (II)
Publisher :
ISBN 13 :
Total Pages : 438 pages
Book Rating : 4.3/5 (91 download)
Download or read book Prediction of Unsteady Aerodynamic Loadings on Non-planar Wings and Wing-tail Configurations in Supersonic Flow written by Jack Morito (II) and published by . This book was released on 1972 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: A three-dimensional extension of the Mach Box technique was developed for the unsteady aerodynamic analysis of non-planar wings and wing-tail configurations in supersonic flow. Various refinement procedures were included to improve the accuracy of the results. A general purpose computer program was written for the CDC 6600. The program is capable of treating wing-tail combinations with or without vertical separation, longitudinal separation and dihedral on either surface. If a wing alone is treated, perturbation velocity components in the flow field may be found. Correlations with experimental flutter results were performed for several models tested in the low supersonic Mach number range. The methods are intended to be used by airplane designers to calculate with improved accuracy, the unsteady aerodynamic loads that act on a lifting surface being propelled at supersonic speeds. The new feature of these calculations is that the aerodynamic interference between the wing and tail was taken into account. These calculations are an essential ingredient of flutter analyses and will improve the confidence level of such calculations in preventing wing-tail flutter.
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Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (317 download)
Download or read book Modeling of Aircraft Unsteady Aerodynamic Characteristics. Part 1: Postulated Models written by and published by . This book was released on 1994 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Juan Carlos Gomez
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (932 download)
Download or read book Low-Order Modeling of the Unsteady Aerodynamics in Flapping Wings written by Juan Carlos Gomez and published by . This book was released on 2015 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigation of unsteady aerodynamics is becoming a more attractive topic of research in enhancing flight capabilities. Natural flyers such as birds and insects can undergo flight maneuvers that are very difficult or not possible with current aerodynamic understanding. Modeling the unsteady phenomena produced by flapping wings is important to the understanding of these maneuvers, with possible applications to aircraft flight. We investigate reduced-order modeling of the unsteady aerodynamics generated by flapping wings using the two separate approaches of rotational lift and dynamic stall. A low order quasi steady model based on rotational lift and a revised version incorporating dynamic stall are presented. Both concepts are analyzed using simulated results, with experimental data measured with matching kinematics as a basis of comparison. This combined model is then used to conduct parametric studies of the time averaged aerodynamic forces over varying kinematic variables.
Author :
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (317 download)
Download or read book NASA Langley Scientific and Technical Information Output: 1999 written by and published by . This book was released on 2000 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (742 download)
Download or read book Model of Unsteady Aerodynamic Coefficients of a Delta Wing Aircraft at High Angles of Attack written by and published by . This book was released on 2003 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 50 pages
Book Rating : 4.:/5 (317 download)
Download or read book Modeling of Aircraft Unsteady Aerodynamic Characteristics/Part 3 - Parameters Estimated from Flight Data written by and published by . This book was released on 1996 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. National Aeronautics and Space Administration
Publisher :
ISBN 13 :
Total Pages : 448 pages
Book Rating : 4.:/5 (31 download)
Download or read book Index of NASA Technical Publications written by United States. National Aeronautics and Space Administration and published by . This book was released on 1960 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William R. Wells
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.3/5 (91 download)
Download or read book An Approximate Analysis of Wing Unsteady Aerodynamics written by William R. Wells and published by . This book was released on 1979 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A brief review of the unsteady aerodynamics in lifting surface theory is reported. For utility in design application, simplified but accurate analytical expressions were developed for generalized unsteady aerodynamics of wings of finite aspect ratio and sweep. This includes a means of calculating the unsteady lift load on the wing and tail surface of arbitrary shape and angle of attack variation. In addition, a formulation to include the indicial aerodynamics in the longitudinal equations of motion of the aircraft was performed. Sample numerical solutions to the longitudinal equations for a step input in elevator deflection are presented for the Navion aircraft. From these calculations, a noted difference in angle of attack and pitch rate response can be seen for the cases of unsteady and quasi-steady aerodynamics. The apparent increase in damping effects in the aircraft response due to the unsteady aerodynamics indicate that various design constraints might be relaxed somewhat if the unsteady aerodynamics is modeled properly. (Author).
Author : Essam H. Atta
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.:/5 (85 download)
Download or read book Nonlinear Steady and Unsteady Aerodynamics of Wings and Wing-body-combinations written by Essam H. Atta and published by . This book was released on 1978 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher Jouannet
Publisher :
ISBN 13 : 9789173737692
Total Pages : 143 pages
Book Rating : 4.7/5 (376 download)
Download or read book Modelling of Unsteady Aerodynamics for Aircraft Design written by Christopher Jouannet and published by . This book was released on 2003 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. National Aeronautics and Space Administration
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.F/5 ( download)
Download or read book Index to NASA Technical Publications written by United States. National Aeronautics and Space Administration and published by . This book was released on 1960-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jeffrey P. Thomas
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book A Static/dynamic Correction Approach for Reduced-order Modeling of Unsteady Aerodynamics written by Jeffrey P. Thomas and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xuanhong An
Publisher :
ISBN 13 :
Total Pages : 250 pages
Book Rating : 4.:/5 (128 download)
Download or read book Low-order Modeling of Unsteady Aerodynamic Forces written by Xuanhong An and published by . This book was released on 2018 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
